Jumpei Yamasaki defeated Ko Suzuki 6-4 6-2 in the M25 Takasaki 1 q32 on hard. The result followed the form book — Jumpei Yamasaki came in ranked #1025, leading the head-to-head 1–0. Jumpei Yamasaki extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-09-07 | M25 Sapporo 2 | Q32 | hard | Jumpei Yamasaki | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.